Coal screening device and using method thereof

Abstract

The invention discloses a coal screening device and a using method thereof. The coal screening device comprises a shell, a baffle plate, a first-stage feeding buffer rotating carrier roller, a second-stage feeding buffer rotating carrier roller, a rotating shafts, rotating wheels with gear teeth, stepped screen plates and a speed reducing driving mechanism, wherein a feeding hole is formed in oneside of the top of the shell, and a large-particle discharging hole and a small-particle discharging hole are formed in the bottom of the shell; the baffle plate is arranged on the position, below thefeeding hole, of the interior of the shell; and the first-stage feeding buffer rotating carrier roller, the second-stage feeding buffer rotating carrier roller and the plurality of rotating shafts are obliquely arranged on the two inner walls of the shell from top to bottom in sequence, and the plurality of rotating wheels with the gear teeth and corresponding stepped screen plates are arranged on each rotating shaft in parallel. When the coal is screened, the noise is low, the blockage is not easy, the energy consumption is low, the maintenance is basically not needed, and a subsequent crusher is not easy to block in the process of screening the sticky coal containing certain moisture.

Description

technical field [0001] The invention relates to the field of coal, in particular to a coal screening device and a method for using the same. Background technique [0002] At present, the coal screening systems of thermal power plants, coal preparation plants and coal chemical enterprises mostly use screening equipment such as vibrating screens, drum screens, roller screens, and sinusoidal screens. These screening equipments are noisy and easy to block the screen holes. , high energy consumption, large maintenance and other shortcomings. Especially when the water content of the coal is slightly high, the screening efficiency of the above-mentioned screening equipment will be low, so that a large amount of crushed coal will enter the crusher, causing the gap of the grate to control the particle size inside the crusher to be blocked, and the wear of the hammer head will be accelerated exponentially. As a result, the vibration efficiency of the inner rotor of the crusher is red...

AI Technical Summary

Problems solved by technology

[0002] At present, the coal screening systems of thermal power plants, coal preparation plants and coal chemical enterprises mostly use screening equipment such as vibrating screens, drum screens, roller screens, and sinusoidal screens. These screening equipments are noisy and easy to block the screen holes. , high energy consumption, large maintenance and other disadvantages

Especially when the water content of the coal is slightly high, the screening efficiency of the above-mentioned screening equipment will be low, so that a large amount of crushed coal will enter the crusher, causing the gap of the grate to control the particle size inside the crusher to be blocked, and the wear of the hammer head will be accelerated exponentially. As a result, the vibration efficiency of the inner rotor of the crusher is reduced, the cost of spare parts and maintenance workload are increased, and the effective and safe operation time of the crusher is reduced. In severe cases, shutdown accidents occur, which cannot meet the production requirements of enterprises

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